CN218241249U - LED display device - Google Patents

Abstract

The utility model provides a LED display device, include: the front side of box is provided with the front opening, and the rear side of box is provided with the back opening. The front display module is arranged at the front opening. The rear display module is arranged at the rear opening. The box, preceding display module assembly and back display module assembly enclose into inner space. The fan sets up in the inner space. Wherein, the bottom of box is provided with the inlet port with the inner space intercommunication, and the side at the top of box is provided with the louvre with the inner space intercommunication. The technical scheme of this application has solved the relatively poor problem of radiating effect of the box among the correlation technique effectively.

Description

LED display device

Technical Field

The utility model relates to a LED shows technical field, particularly, relates to a LED display device.

Background

An LED display device is a flat panel display for displaying various information such as characters, images, video, and video signals.

With the wide application of LED display devices in the advertising industry, LED display devices are installed on the outer walls of many buildings. However, the internal heat of the case of the LED display device in the related art cannot be rapidly discharged, so that the heat dissipation effect of the case is poor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a LED display device to solve the problem of poor heat dissipation of the box in the related art.

In order to achieve the above object, the present invention provides a LED display device, including: the front side of the box body is provided with a front opening, and the rear side of the box body is provided with a rear opening; the front display module is arranged at the front opening; the rear display module is arranged at the rear opening, and the box body, the front display module and the rear display module enclose an inner space; a fan disposed in the internal space; wherein, the bottom of box is provided with the inlet port with the inner space intercommunication, and the side at the top of box is provided with the louvre with the inner space intercommunication.

Further, the top of box is including apron and the top cap that the apron was located to the lid, and the side edge of top cap is connected with the side edge of apron, is provided with the first through-hole of the inner chamber of intercommunication inner space and top cap on the apron, and the louvre sets up in the side of top cap.

Furthermore, part of the hole wall surfaces of the heat dissipation holes are flush with or lower than the upper surface of the cover plate.

Furthermore, a water baffle plate extending upwards is arranged on the upper surface of the cover plate, and an overflowing gap is formed between the water baffle plate and the top cover.

Further, the top cap includes preceding curb plate and posterior lateral plate, the louvre is a plurality of, a plurality of louvres set up in preceding curb plate and posterior lateral plate, a plurality of louvres on the preceding curb plate are first thermovent group, a plurality of louvres on the posterior lateral plate are second thermovent group, a plurality of breakwaters include the first breakwater that corresponds with first thermovent group and the second breakwater that corresponds with second thermovent group, first communication hole is located between first breakwater and the second breakwater, it overflows the clearance including the first clearance that overflows that is located between first breakwater and the top cap and the second that is located between second breakwater and the top cap overflows the clearance.

Furthermore, the first water baffle is obliquely arranged towards the first radiating hole group, so that a first obtuse included angle is formed between one side, away from the first radiating hole group, of the first water baffle and the upper surface of the cover plate; and/or the second water baffle is obliquely arranged towards the second radiating hole group, so that a second obtuse included angle is formed between one side, away from the second radiating hole group, of the second water baffle and the upper surface of the cover plate.

Furthermore, the LED display device further comprises an air duct arranged between the fan and the cover plate, an upper port of the air duct extends into the first communicating hole, and the air duct is communicated with the inside of the fan and the inner cavity of the top cover.

Further, the fan is connected below the top of the box body, the LED display device further comprises a protective cover arranged on the outer side of the fan in a covering mode, a second communicating hole communicated with the inlet of the fan and the inner space is formed in the protective cover, and the outlet of the fan faces the cover plate and is communicated with the lower port of the air guide cylinder.

Furthermore, the bottom of the box body comprises a bottom plate and a bottom cover covered on the bottom plate, the side edge of the bottom cover is connected with the side edge of the bottom plate, a third communicating hole which is used for communicating the inner space with the inner cavity of the bottom cover is formed in the bottom plate, and an air inlet is formed in the bottom cover.

Furthermore, the lower surface of the bottom cover is provided with a sunken groove, and the air inlet is arranged at the bottom wall of the sunken groove of the bottom cover.

Further, the preceding lateral wall is provided with towards the preceding section of sheltering from that the groove rear side wall of heavy groove extends before the groove of heavy groove, and the groove rear side wall of heavy groove is provided with towards the back section of sheltering from that the groove front side wall of heavy groove extends, and preceding sheltering from has the third with the inlet port intercommunication between the section and the back section of sheltering from and overflows the clearance.

Use the technical scheme of the utility model, LED display device includes: box, preceding display module assembly, back display module assembly and fan. The front side of the box body is provided with a front opening, and the rear side of the box body is provided with a rear opening. The front display module is arranged at the front opening. The rear display module is arranged at the rear opening. The box, the front display module and the rear display module enclose an inner space. The fan sets up in the inner space, is convenient for form the air current in the inner space, strengthens the circulation of air, the inside heat of quick discharge box. Wherein, the bottom of the box body is provided with an air inlet communicated with the inner space. The side of the top of the box body is provided with a heat dissipation hole communicated with the inner space. When the fan works, air enters from the air inlet hole at the bottom of the box body, and heat generated during the working of the box body can be discharged from the heat dissipation holes in the side face of the top of the box body in time under the driving of air flow in the inner space. Air enters the inner space from the air inlet and is discharged from the heat dissipation holes through the inner space, and an air circulation channel is formed. The high temperature generated in the box body is avoided, the normal work of the box body is prevented from being influenced, and the LED display device can keep stable work for a long time. Consequently, the relatively poor problem of radiating effect of the box among the correlation technique has been solved effectively to the technical scheme of this application.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of an LED display device according to the present invention;

fig. 2 is a schematic perspective view illustrating a front display module of the LED display device of fig. 1 in an opened state;

FIG. 3 shows a schematic partially exploded view of the LED display device of FIG. 1;

FIG. 4 is a schematic perspective cross-sectional view of the LED display device of FIG. 1 in a state without a front display module mounted thereon;

FIG. 5 shows an enlarged schematic view at A of the LED display device of FIG. 4;

FIG. 6 shows a schematic perspective cross-sectional view of the LED display device of FIG. 1;

FIG. 7 shows an enlarged schematic view at B of the LED display device of FIG. 6;

FIG. 8 shows a schematic cross-sectional view of the LED display device of FIG. 1;

FIG. 9 shows an enlarged schematic view at C of the LED display device of FIG. 8;

FIG. 10 shows an enlarged schematic view at D of the LED display device of FIG. 8;

FIG. 11 is a partial schematic structural view of a top cover and a cover plate of the LED display device of FIG. 1;

fig. 12 is a partial structural view showing the bottom of the cabinet of the LED display device of fig. 1.

Wherein the figures include the following reference numerals:

10. a box body; 11. an interior space; 111. a first over-current gap; 112. a second over-current gap; 113. a third overcurrent gap; 114. a front opening; 115. a rear opening; 12. a cover plate; 121. a first communication hole; 13. a water baffle; 131. a first water baffle; 132. a second water baffle; 14. a top cover; 141. a front side plate; 142. a rear side plate; 143. heat dissipation holes; 15. a bottom cover; 151. sinking a groove; 152. an air intake; 153. a front shielding section; 154. a rear shielding section; 16. a base plate; 161. a third communication hole; 20. a front display module; 30. a rear display module; 40. a fan; 41. an outlet of the fan; 50. a protective cover; 51. a second communication hole; 60. an air duct.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3 and 10 to 12, the LED display device of the present embodiment includes: the display device comprises a box body 10, a front display module 20, a rear display module 30 and a fan 40. The front side of the case 10 is provided with a front opening 114, and the rear side of the case 10 is provided with a rear opening 115. The front display module 20 is disposed at the front opening 114. The rear display module 30 is disposed at the rear opening 115. The front display module 20, the rear display module 30 and the box body 10 together form a double-sided display LED display device. The cabinet 10, the front display module 20 and the rear display module 30 enclose an inner space 11. The fan 40 is disposed in the inner space 11. Wherein, the bottom of the box 10 is provided with an air inlet 152 communicated with the inner space 11, and the side surface of the top of the box 10 is provided with a heat dissipation hole 143 communicated with the inner space 11.

By adopting the technical scheme of the embodiment, the fan 40 is arranged in the internal space 11, so that the circulation of air is enhanced, and the heat in the box body 10 is rapidly discharged. The bottom of the box 10 is provided with an air inlet 152 communicated with the inner space 11, which ensures that the inner space 11 has enough air to enter and ensures the air circulation. The side surface of the top of the case 10 is provided with a heat radiation hole 143 communicating with the inner space 11, so as to discharge the heat inside the case 10. Meanwhile, the heat dissipation hole 143 is located on a side surface of the top of the case 10, and the probability that external water flows into the internal space 11 through the heat dissipation hole 143 can be minimized. Therefore, the technical solution of the present embodiment effectively solves the problem of poor heat dissipation effect of the box 10 in the related art.

As shown in fig. 1 to 3 and 9 to 11, the top of the box 10 includes a cover plate 12 and a top cover 14 covering the cover plate 12, a side edge of the top cover 14 is connected to a side edge of the cover plate 12, the cover plate 12 is provided with a first communication hole 121 communicating the inner space 11 with an inner cavity of the top cover 14, and the first communication hole 121 enables air in the inner space 11 to circulate into the inner cavity of the top cover 14. The heat dissipation holes 143 are provided in the side surfaces of the top cover 14, and water is less likely to flow into the inner cavity of the top cover 14 than in the top surface of the top cover 14. On the basis, the air with heat flowing through the inner cavity of the top cover 14 can be discharged out of the LED display device through the heat dissipation hole 143. As shown in fig. 9 and 11, the wall surface of a part of the heat dissipation hole 143 is flush with or lower than the upper surface of the cover plate 12, so as to guide the air flow direction, ensure that the air can be smoothly discharged from the heat dissipation hole 143, and guide the flow direction of the water when the water enters the top cover 14 from the side surface of the top cover 14, so that the water can directly flow out from the heat dissipation hole 143.

As shown in fig. 9 and 11, the cover plate 12 is provided on an upper surface thereof with a water guard 13 extending upward, and an overflow gap is provided between the water guard 13 and the top cover 14. The water deflector 13 is effective to block water from entering the interior space 11 when water enters the interior cavity of the top cover 14 from the side of the top cover 14. The flow gap ensures the circulation of air and ensures that the internal heat can be discharged along with the air.

As shown in fig. 8 to 10, the top cover 14 includes a front plate 141 and a rear plate 142, a plurality of heat dissipation holes 143 are formed, the plurality of heat dissipation holes 143 are disposed on the front plate 141 and the rear plate 142, the plurality of heat dissipation holes 143 formed on the front plate 141 are a first heat dissipation hole set, and the plurality of heat dissipation holes 143 formed on the rear plate 142 are a second heat dissipation hole set. Set up a plurality of louvres 143 and further guaranteed the smooth and easy of circulation of air, ensure that inside heat can discharge fast. The plurality of water baffles 13 include a first water baffle 131 corresponding to the first heat sink group and a second water baffle 132 corresponding to the second heat sink group. The arrangement of the first water baffle 131 and the second water baffle 132 ensures that water cannot enter the inner cavity of the top cover 14 from the front side plate 141 of the top cover 14 and the rear side plate 142 of the top cover 14. The first communication hole 121 is located between the first and second water baffles 131 and 132 such that water cannot enter the inner space 11 from the first communication hole 121. The flow-through gap includes a first flow-through gap 111 between the first water baffle 131 and the top cover 14 and a second flow-through gap 112 between the second water baffle 132 and the top cover 14. The first flow-passing gap 111 allows the air in the inner space 11 to flow between the first water baffle 131 and the top cover 14, and the second flow-passing gap 112 allows the air in the inner space 11 to flow between the second water baffle 132 and the top cover 14, thereby ensuring that the air in the inner space 11 can be discharged from the heat dissipation hole 143 with heat.

As shown in fig. 9 and 11, the first water baffle 131 is inclined toward the first heat sink group, so that a first obtuse included angle is formed between one side of the first water baffle 131 away from the first heat sink group and the upper surface of the cover plate 12, and the second water baffle 132 is inclined toward the second heat sink group, so that a second obtuse included angle is formed between one side of the second water baffle 132 away from the second heat sink group and the upper surface of the cover plate 12. Before the air in the inner space 11 flows through the first flow-passing gap 111, the air flows along the first water baffle 131 to guide the air due to the first obtuse included angle, so that the air can smoothly flow through the first flow-passing gap 111. Before the air in the inner space 11 flows through the second flow-passing gap 112, due to the second obtuse included angle, the air flows along the second water baffle 132 to guide the air, so that the air can smoothly flow through the second flow-passing gap 112. Thereby ensuring smoother air circulation.

Of course, in the embodiment not shown in the drawings, the first water baffle is disposed obliquely toward the first heat dissipation hole group so that a first obtuse included angle is formed between the side of the first water baffle away from the first heat dissipation hole group and the upper surface of the cover plate, or the second water baffle is disposed obliquely toward the second heat dissipation hole group so that a second obtuse included angle is formed between the side of the second water baffle away from the second heat dissipation hole group and the upper surface of the cover plate.

As shown in fig. 4 and 5, the LED display device further includes an air duct 60 disposed between the fan 40 and the cover plate 12, an upper port of the air duct 60 extends into the first communication hole 121, and the air duct 60 communicates the inside of the fan 40 and the inner cavity of the top cover 14. The air duct 60 can collect the outlet air of the fan 40, and the outlet air of the fan 40 is sent into the top cover 14 through the first communication hole 121, so that the heat of the inner space 11 can be discharged into the top cover 14 along with the outlet air of the fan 40. As shown in fig. 4 and 5, the blower fan 40 is connected to the lower portion of the top of the cabinet 10, the LED display device further includes a protective cover 50 covering the outside of the blower fan 40, and the protective cover 50 is provided with a second communication hole 51 communicating the inlet of the blower fan 40 with the inner space 11. The fan 40 is preferably an axial fan. The protective cover 50 plays a role in protecting the fan 40, and can also avoid artificial accidental contact to prevent danger.

The plurality of second communication holes 51 are provided in the protection cover 50, which protects the fan 40 from being smooth and facilitates air circulation. The outlet 41 of the fan faces the cover plate 12 and is communicated with the lower port of the air duct 60, so that the wind generated by the fan 40 can drive the air to be discharged from the outlet facing the top of the box 10, and the heat of the inner space 11 is discharged from the heat radiation holes 143 along with the air through the flow passing gap.

In this embodiment, the air duct 60 includes a first vertical plate, a second vertical plate, a third vertical plate, and a fourth vertical plate, which are connected in sequence, and the first vertical plate, the second vertical plate, the third vertical plate, and the fourth vertical plate enclose a cylindrical structure.

As shown in fig. 6 to 7 and 10 to 12, the bottom of the box 10 includes a bottom plate 16 and a bottom cover 15 covering the bottom plate 16, and a side edge of an edge of the bottom cover 15 is connected to a side edge of the bottom plate 16. The bottom plate 16 is provided with a third communication hole 161 for communicating the inner space 11 with the inner cavity of the bottom cover 15. The third communication hole 161 can communicate the inner cavity of the bottom cover 15 with the inner space 11 so that the air of the inner cavity of the bottom cover 15 flows into the inner space 11. The air inlet hole 152 is disposed on the bottom cover 15, and the air inlet hole 152 communicates the outside of the LED display device with the inner cavity of the bottom cover 15, so that sufficient air is circulated into the inner space 11 through the third communication hole 161. In this embodiment, the third communication holes 161 are provided at intervals along the longitudinal direction of the bottom plate 16.

The cross-sectional shape of the top cover 14 and the cross-sectional shape of the bottom cover 15 are preferably "door" shaped.

As shown in fig. 6 to 7 and 10 to 12, a sinking groove 151 is formed on the lower surface of the bottom cover 15. The air intake holes 152 are formed in the bottom cover 15 at the bottom wall of the sink groove 151 to prevent water from being accumulated in the bottom of the case 10 and being sucked into the inner space 11 of the case 10.

As shown in fig. 8 to 11, the groove front sidewall of the sinking groove 151 is provided with a front shielding section 153 extending toward the groove rear sidewall of the sinking groove 151, and the groove rear sidewall of the sinking groove 151 is provided with a rear shielding section 154 extending toward the groove front sidewall of the sinking groove 151. The front shielding section 153, the rear shielding section 154 and the sinking groove 151 form a T-shaped groove, so that the T-shaped connecting block can be conveniently inserted into the T-shaped groove to fix the T-shaped connecting block on an auxiliary support (such as an auxiliary support on an outdoor advertising pole), and further fix the LED display device on the outdoor advertising pole. Meanwhile, the front shielding section 153 and the rear shielding section 154 can shield the lower surface of the bottom cover 15, so that water outside the LED display device cannot enter the inner cavity of the bottom cover 15, and the bottom of the box 10 can be effectively prevented from entering water by the arrangement of the sink groove 151. A third flow passage gap 113 communicated with the air inlet hole 152 is formed between the front shielding section 153 and the rear shielding section 154, and the third flow passage gap 113 ensures that the external air can flow through the space between the front shielding section 153 and the rear shielding section 154.

In this embodiment, the air inlet hole 152, the third flow passage gap 113, the third communication hole 161, the inner space 11, the second communication hole 51, the inlet of the fan, the outlet 41 of the fan, the first communication hole 121, the first flow passage gap 111, the second flow passage gap 112, the first heat dissipation hole group, and the second heat dissipation hole group together form an air circulation channel, so that the heat in the inner space 11 is rapidly discharged, and the heat dissipation effect of the LED display device is further ensured. In this embodiment, the sinking grooves 151 are spaced apart from each other in the front-rear direction, the air inlets 152 are plural, and the bottom wall of each sinking groove 151 is provided with a plurality of air inlets 152. So that more air flows into the inner cavity of the bottom cover 15 through the plurality of air inlet holes 152 outside the LED display device.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. An LED display device, comprising:

the refrigerator comprises a refrigerator body (10), wherein a front opening (114) is formed in the front side of the refrigerator body (10), and a rear opening (115) is formed in the rear side of the refrigerator body (10);

a front display module (20) disposed at the front opening (114);

the rear display module (30) is arranged at the rear opening (115), and an inner space (11) is enclosed by the box body (10), the front display module (20) and the rear display module (30);

a fan (40) disposed within the interior space (11);

wherein, the bottom of box (10) is provided with inlet port (152) that inner space (11) communicate, the side at the top of box (10) is provided with louvre (143) that inner space (11) communicate.

2. The LED display device according to claim 1, wherein the top of the case (10) comprises a cover plate (12) and a top cover (14) covering the cover plate (12), the side edge of the top cover (14) is connected to the side edge of the cover plate (12), the cover plate (12) is provided with a first communication hole (121) communicating the inner space (11) and the inner cavity of the top cover (14), and the heat dissipation hole (143) is disposed on the side of the top cover (14).

3. The LED display device as claimed in claim 2, wherein part of the hole wall surface of the heat dissipation hole (143) is flush with or lower than the upper surface of the cover plate (12).

4. The LED display device according to claim 2, wherein the cover plate (12) is provided with an upwardly extending water baffle (13) on an upper surface thereof, and an overflow gap is provided between the water baffle (13) and the top cover (14).

5. The LED display device according to claim 4, wherein the top cover (14) comprises a front plate (141) and a rear plate (142), the heat dissipation holes (143) are plural, the plurality of heat dissipation holes (143) are disposed on the front plate (141) and the rear plate (142), the plurality of heat dissipation holes (143) on the front plate (141) are a first heat dissipation hole group, the plurality of heat dissipation holes (143) on the rear plate (142) are a second heat dissipation hole group, the plurality of water baffles (13) comprise a first water baffle (131) corresponding to the first heat dissipation hole group and a second water baffle (132) corresponding to the second heat dissipation hole group, the first communication hole (121) is located between the first water baffle (131) and the second water baffle (132), and the overflowing gap comprises a first overflowing gap (111) located between the first water baffle (131) and the top cover (14) and a second overflowing gap (112) located between the second water baffle (132) and the top cover (14).

6. The LED display device according to claim 5, wherein the first water baffle (131) is disposed obliquely towards the first heat sink group, so that a first obtuse included angle is formed between a side of the first water baffle (131) away from the first heat sink group and the upper surface of the cover plate (12); and/or the second water baffle (132) faces the second radiating hole group and is obliquely arranged, so that a second obtuse included angle is formed between one side, away from the second radiating hole group, of the second water baffle (132) and the upper surface of the cover plate (12).

7. The LED display device according to claim 2, further comprising an air duct (60) disposed between the fan (40) and the cover plate (12), wherein an upper port of the air duct (60) extends into the first communication hole (121), and the air duct (60) communicates the inside of the fan (40) and the inner cavity of the top cover (14).

8. The LED display device according to claim 7, wherein the fan (40) is connected below the top of the box body (10), the LED display device further comprises a protective cover (50) covering the outside of the fan (40), a second communication hole (51) communicating an inlet of the fan (40) with the inner space (11) is formed in the protective cover (50), and an outlet (41) of the fan faces the cover plate (12) and is communicated with a lower port of the air guide cylinder (60).

9. The LED display device according to any one of claims 1 to 8, wherein the bottom of the housing (10) includes a bottom plate (16) and a bottom cover (15) covering the bottom plate (16), a side edge of the bottom cover (15) is connected to a side edge of the bottom plate (16), a third communication hole (161) communicating the inner space (11) and an inner cavity of the bottom cover (15) is provided in the bottom plate (16), and the air intake hole (152) is provided in the bottom cover (15).

10. The LED display device of claim 9, wherein the lower surface of the bottom cover (15) is provided with a sink groove (151), and the air intake hole (152) is provided at a position where the bottom cover (15) is located at a groove bottom wall of the sink groove (151).

11. The LED display device according to claim 10, wherein a front shielding section (153) is disposed on a front groove sidewall of the sinking groove (151) and extends toward a rear groove sidewall of the sinking groove (151), a rear shielding section (154) is disposed on a rear groove sidewall of the sinking groove (151) and extends toward the front groove sidewall of the sinking groove (151), and a third flow-passing gap (113) is formed between the front shielding section (153) and the rear shielding section (154) and communicates with the air inlet hole (152).

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